COURSE PROGRAM


 

Contents

  • I1 Introduction and basic concepts. Gallery of basic phenomena, micro- to macro- scale (molecular dynamics/continuum approaches), contact angle, Young equation, Laplace pressure, Free Gibbs Energy, Marangoni effects - Amirfazli
     
  • I2 Introduction to fluid mechanics of liquid interfaces. Basic equations, Navier-Stokes equations for capillary flows, liquid jet break-up - Marengo
     
  • I3 Surface tension & measurement techniques. Equilibrium and dynamic surface tension. De Nouy/Wilhelmy, sessile drop and pendant drop (ADSA), maximum bubble pressure. - Bertola
     
  • D1 Dynamics of drops deposited on a surface. Sessile drops, spreading law, apparent and real contact angles. Drop shedding, contact angle hysteresis. - Amirfazli
     
  • D2 Introduction to drop-wall interactions. Drop impact on dry and wetted surfaces. Morphology. Shallow and thick layers. Splashing correlations. - Marengo
     
  • D3 Heat and mass transfer in drops. Mono-component droplet heating and evaporation. Abramzon and Sirignano model. - Bertola
     
  • D4 Drop impact on heated surfaces. Introduction to drop impact onto heated surfaces. Impact regime maps. Transitions. Dynamic Leidenfrost temperature. Control of secondary atomization and splashing. - Bertola
     
  • A1 Superhydrophobicity. Application of superhydrophobic surfaces. Cassie-Wenzel and competing theories. Types of SHS and manufacturing techniques. Impact on SHS surfaces. Impalement transition. - Amirfazli
     
  • S1 Physics of sprays and applications. Spray formation, atomization models. Evaporation, gas entrainment, impact. - Marengo
     
  • S2 Spray characterization. Measurement of drop size and drop flux densities. Optical techniques. Counting and integral methods. Point and planar techniques. Advantages and disadvantages. - Pastor
     
  • ES1 Hydraulic characterization. injection rate and spray momentum, 1D modelling of common rail injectors. - Payri
     
  • ES2 Reactive dynamics of Diesel sprays. Diesel spray evaporation, mixing and ignition. Scaling laws and 1D modelling - Garcia
     
  • ES3 3D CFD non reactive spray modelling. Modelling approaches and application to engine sprays - Pastor
     
  • ES3 3D CFD reactive spray modelling. Modelling approaches and application to engine sprays - Novella
     
  • Experiments 1. Diesel Spray measurements in a high pressure and high temperature vessel - Payri
     
  • Experiments 2. Injection rate, spray momentum and Spray visualization for a gasoline direct injector - Payri